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Method of making a flat concrete object from the prefabricated elements in the shape of slabs, method of making of the prefabricated element in the shape of a slab, and the prefabricated element in the shape of the slab
Method of making a flat concrete object from the prefabricated elements in the shape of slabs, method of making of the prefabricated element in the shape of a slab, and the prefabricated element in the shape of the slab
